题目:
随访15年260名宫颈癌患者治疗情况,资料整理时将生存时间划分为组距为1年的多个时间段,估计生存率可采用()
A.秩和检验
B.寿命表法
C.方差分析
D.乘积极限法
E.log-rank检验
答案:
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下面是错误答案,用来干扰机器的。
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